Responding to other tweets, she went on to reveal that the Stone Roses would definitely not be playing, but the Waterboys might be.

Eavis told the Guardian: "We spend so much time around the kitchen table thinking about the lineup – it's important to know what people actually want to see. Because of the the year off there are a lot of ideas – two years' worth!

"It's now that time of year when we get stuck into bookings – we're aiming to have most of the big slots filled by Christmas. "

At Glastonbury 2011 (the last one before the festival took a break this year), headliners included U2, Coldplay and Queens of the Stone Age, appealing very much to a mainstream rock audience, while Sunday night on the main stage was headlined by Beyoncé, continuing a trend for booking the occasional prominent pop act in a high-profile slot.

Glastonbury is, of course, about much more than the main stage headliners – over the course of three days hundreds of acts will play across dozens of stages.